package quiz;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class AdminServlet
 */
@WebServlet("/AdminPage")
public class AdminServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public AdminServlet() {
        super();
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		DataBase db = (DataBase)request.getServletContext().getAttribute("db");

		//The following methods return ints that you can use to print summary
		//statistics at the top
		
		String summaryHTML = "<div> Total number of quizzes: " + db.getTotalNumQuizzes() +  "</div>";
		summaryHTML += "<div> Total number of quizzes taken: " + db.getTotalNumQuizzesTaken() +  "</div>";
		summaryHTML += "<div> Total number of users: " + db.getTotalNumUsers() +  "</div>";
		
		request.setAttribute("summaryHTML", summaryHTML);
		
		RequestDispatcher dpatch = request.getRequestDispatcher("admin-page.jsp");
		dpatch.forward(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	}

}
